611061620 has 24 divisors (see below), whose sum is σ = 1381939944. Its totient is φ = 225622656.

The previous prime is 611061613. The next prime is 611061667. The reversal of 611061620 is 26160116.

It can be written as a sum of positive squares in 4 ways, for example, as 1860496 + 609201124 = 1364^2 + 24682^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1174859 + ... + 1175378.

It is an arithmetic number, because the mean of its divisors is an integer number (57580831).

Almost surely, 2^611061620 is an apocalyptic number.

It is an amenable number.

611061620 is an abundant number, since it is smaller than the sum of its proper divisors (770878324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611061620 is a wasteful number, since it uses less digits than its factorization.

611061620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350259 (or 2350257 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 611061620 is about 24719.6605963755. The cubic root of 611061620 is about 848.5843193774.

It can be divided in two parts, 61106 and 1620, that added together give a palindrome (62726).

The spelling of 611061620 in words is "six hundred eleven million, sixty-one thousand, six hundred twenty".